KR100274702B1 - Air conditioner - Google Patents

Abstract

In an air conditioner in which infrared rays are focused on a specific point, and the temperature of the specific point is used for control, the reflecting means 220 includes a straight line whose cross-sectional shape is in contact with the vertex of the parabola. An air conditioner which is surrounded by a straight line crossing at an acute angle with respect to a straight line and which has a vertex and which has a vertex, and which supplies air regulated so that room temperature is a set temperature, is supplied to the conditioning chamber. The air conditioner is characterized by detecting the temperature of the lower surface and correcting the set value in a direction close to the outside temperature when the temperature exceeds the predetermined temperature and falls from the outside temperature.

Description

Air conditioner

1 is an external view of an indoor apparatus of an air conditioner showing an embodiment of the present invention.

2 is an exploded perspective view of an indoor unit of an air conditioner.

3 is an external view of an outdoor device of an air conditioner.

4 is an exploded perspective view of an outdoor device of an air conditioner.

5 is a refrigerant circuit diagram of an air conditioner.

6 is an electric circuit diagram of the indoor device.

7 is an electric circuit diagram of an outdoor device.

8 is a control circuit diagram of an air conditioner.

9 is an external view of a wireless remote control device.

10 is an external view showing a state where the lid of the wireless remote controller is opened.

11 is a cross-sectional view of a portion in which a radiation sensor is attached to an air conditioner.

12 is an enlarged cross-sectional view of the radiation sensor.

13 is an explanatory diagram showing a reflecting means of the radiation sensor;

<Explanation of symbols for main parts of drawing>

1: Indoor device 3: Outdoor device

5: heat exchanger 6: blower

9: suction grill 13: horizontal wing

14: vertical wing 21: radiation sensor

220: reflecting means 221: sensor

322: sensor case 223: hot water receiving plate

224: Dummyster 225: barrel

226 lead wire

The present invention relates to an air conditioner that detects a temperature of an indoor floor surface and controls the temperature based on the detected value.

Conventionally, the ondol of the indoor floor is detected, and when this temperature is low, the temperature, direction, and wind speed of the wind blown toward the floor are adjusted to warm the feet, or by interlocking with a floor heating device such as a hot carpet. An air conditioning system that heats around the feet is known.

The radiation sensor for detecting the floor temperature is usually composed of a reflector collecting infrared rays and a sensor unit collecting infrared rays collected by the reflecting plates.

It is known that the above-mentioned radiation sensor is formed in a so-called parabolic shape in order to concentrate the received infrared rays in one place (focus) as disclosed in Japanese Patent Application Laid-Open No. 3-5533.

However, the conventional radiation sensor has a problem that the reflecting means is formed symmetrically with respect to the center line, and when there is a bias in the bottom surface to be detected, it is impossible to detect a wide range of floor temperature from below the wall to the center of the room.

In the air conditioner which performs temperature control according to the floor temperature, it is desired to detect the temperature from the bottom of the air conditioner to the center of the room.

The present invention provides an air conditioner that enables a wide range of temperature detection with a simple configuration.

In order to achieve the above object, the present invention is to detect the heat of the heat receiving plate and the heat receiving plate and the reflecting means for reflecting the infrared rays to collect the infrared radiation emitted from the bottom surface, and the infrared rays collected by the reflecting means A radiation sensor composed of a single sensor installed near the focal point of the reflecting means made of a dummyster and a sensor case supporting the filter together with the reflecting means is attached downward to the lower side of the front panel of the indoor device. In the air conditioner to use the temperature of the specific point for the control by using the reflecting means for condensing the point of the motor, the side of the sensor case is connected to the axis of the motor to drive the sensor case to the left and right, The reflecting means may be a straight line in cross-sectional shape contacting the vertex of the parabola and at an acute angle with the straight line. An air conditioner, which is surrounded by a straight line intersecting and has a parabolic shape including a vertex.

In addition, the focus of the reflecting means consisting of a reflector means for reflecting the infrared rays to collect the infrared radiation emitted from the bottom surface, a heat receiving plate for receiving the infrared rays collected by the reflecting means and a dummyster for detecting the heat of the heat receiving plate A radiation sensor consisting of a sensor installed in the vicinity and a sensor case supporting the reflecting means is attached downward to the lower side of the front panel of the indoor unit, and air conditioning for supplying temperature-controlled air to the conditioning chamber at a room temperature. The apparatus further includes a controller for controlling the operation of the heat exchanger, the blower, and the outdoor device, wherein the radiation sensor detects the temperature of the lower surface of the conditioning chamber so that this temperature exceeds a predetermined temperature and differs from the outside air temperature. The controller sets the set value closer to the outside temperature based on the detected temperature. Air conditioner characterized in that for correcting.

Referring to the operation of the present invention according to the above configuration, in the air conditioner according to claim 1, since the cross-sectional shape of the reflecting means is a shape obtained by cutting the parabola at an angle, the area for concentrating infrared rays on one side of the radiation sensor is different. It can be wider than the side.

In addition, the right and left along the wall surface side of the indoor device can detect a wide range of temperature by driving the sensor case to the left and right by the drive of the electric motor.

In the air conditioner of Claim 2, for example, in the heating operation, when the temperature of a floor surface is higher than predetermined temperature, the setting value of heating operation is corrected low.

EXAMPLE

Next, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 1 to FIG. 4, the air conditioner of the present invention is composed of an internal device 1 and an outdoor device 3 connected to the indoor device 1 by a refrigerant pipe 2. .

As shown in FIG. 2, the indoor device 1 mainly includes a heat exchanger 5 in the outer case 4, a blower 6 for supplying air to the heat exchanger 5, and controlling them. Controller 7 is arranged.

The front case 8 is attached to the exterior case 4 at its front face, and the suction grill 9 is supported by the front panel 8 to open and close freely.

Inside the suction grill 9, a prefilter 10 for removing relatively large dust and a filter 11 for removing relatively small dust are arranged.

A blower outlet 12 is formed under the front panel 8, and the blower outlet 12 has a horizontal blade 13 for changing the air blowing direction up and down and a vertical for changing the air blowing direction left and right. The wing 14 is provided.

The blower 6 is comprised from the cross flow fan 15 and the fan electric motor 16. As shown in FIG.

And this blower 6 is connected to the scroll part 17, and is made to blow into the blowing port 12. As shown in FIG.

Moreover, the upper part 18 of the scroll part 17 is attached with the dehumidification heater 19 which functions as a reheater at the time of dehumidification operation.

20 is an attachment plate to which the heater 19 is attached.

The controller 7 controls the operation of the heat exchanger 5, the blower 6, the outdoor device 3, and the like, and a radiation sensor 21 is attached to the lower portion thereof.

The controller 7 is configured to control the operation of the blower 6, the vertical wing 14, the horizontal wing 13, and the indoor device 1 according to the detection temperature of the radiation sensor 21.

In addition, the controller 7 is connected to a room temperature detector 22 for detecting the room temperature and a humidity detector 23 for detecting the indoor humidity.

24 is a power plug.

2, the front panel 8, the suction grill 9 and the like are not shown.

3 and 4 show the outdoor device 3, which is installed in a yard, a veranda, or the like.

The exterior panel of the outdoor device 3 is composed of a back plate 34 in which the ceiling plate 31 and both side plates 32 and 33 are integrally formed, the front plate 35 and the bottom plate.

The front panel 35 is formed with a jet port 36.

In addition, the ejection opening 36 is provided with an ejection grill 37.

Further, a terminal cover 39 and a valve cover 40 having a handle 38 are attached to the side plate 33 on the right side.

Suction ports 41 and 42 are formed in the back plate 34 and the left side plate 32.

51 is an outdoor heat exchanger, and this heat exchanger 51 is formed in substantially "L" shape.

Reference numeral 52 is a propeller fan, 53 is a fan motor to which the propeller fan 52 is attached, and 54 is a motor arm to which the electric motor 53 is attached.

55 is a rotary compressor, 56 is an accumulator connected to this compressor 55, 57 is a silencer, 58 is a 4-way valve for switching a flow path of a refrigerant.

59 is a controller for controlling the operation of the outdoor device 3, 60 is an electrical component that generates heat by energization, 61 is a cooler for cooling the electrical component 60, and 62 is a condenser.

63 is a partition plate, and is partitioned into the machine room in which the compressor 55 and the controller 59 are arrange | positioned by this partition plate 63, and the heat exchange chamber in which the heat exchanger 51 and the fan 52 are arrange | positioned.

64 is a strainer for removing dust from the refrigerant, 65 is an electric expansion valve, 66 is a strainer, 67 is a connecting valve for coarse observation, 68 is a connecting valve on the side of a narrow tube, and 69 is a silencer.

5 is a refrigerant circuit.

80 is a solenoid valve, and this solenoid valve 80 is opened at the time of defrosting operation.

81 denotes a refrigerant pipe connecting the compressor 55 and the four-way valve 58. A silencer 57 is provided in the middle of the refrigerant pipe 81. As shown in FIG.

83 is a refrigerant pipe connecting the 4-way valve 58 and the outdoor heat exchanger 51, and 84 is a refrigerant pipe connecting the outdoor heat exchanger 51 and the connection valve 68 on the customs side. 84 is provided with a strainer 64, an electric expansion valve 65 and a strainer 66.

85 denotes a pipe between devices connecting the connecting valve 68 and the auxiliary pipe 86.

The auxiliary pipe 86 is a customs pipe, the auxiliary pipe 87 is a thick pipe.

88 is a pipe between devices connecting the auxiliary pipe 87 and the connecting valve 67, 89 is a refrigerant pipe connecting the connecting valve 67 and the four-way valve 58, 90 is a four-way valve 58 and the compressor A coolant pipe connecting 55 is provided with a accumulator 56 in the middle of the coolant pipe 90.

Numeral 91 denotes a heat gas bypass tube connecting the refrigerant tube 81 and the refrigerant tube 84. An intermediate valve 80 is provided at the middle of the tube 91 to open during defrost operation.

In the cooling operation, the coolant flows in the direction of the solid arrow, in the heating run, the coolant flows in the direction of the dotted line arrow, and in the defrosting operation, the coolant flows into the hot gas bypass pipe 91.

6 shows an electric circuit diagram of the indoor device.

100 is a control board, and the substrate 100 has an electric motor 101 for driving the horizontal wing 13, an electric motor 102 for driving the left wing 14 on the left side, or a vertical wing 14 on the right side. The electric motor 103 for driving () and the electric motor 104 for driving the radiation sensor 21 are connected.

The control board 100 is connected to a room temperature detector 22, a temperature detector 105, a humidity detector 23, and the like for detecting the temperature of the indoor heat exchanger 5.

Reference numeral 113 is a switch substrate, 112 is a display substrate, and each of the substrates 113 and 112 is connected to the controller board 107.

108 is a power supply board, and a fan motor 16 is connected to this power supply board 108.

This power supply board 108 is also connected to the control board 100.

109 is a triac substrate, which is connected to the controller board 100, the 3-pin terminal board 110, and the dehumidifying heater circuit 111.

112 is a display substrate and 113 is a switch substrate.

7 shows an electric circuit diagram of the outdoor device.

120 denotes a control board for controlling the outdoor device 3, and the control board 120 detects the temperature of the temperature detector 121 for detecting the refrigerant temperature of the compressor 55 or the temperature of the outdoor heat exchanger 51. A temperature detector 122 for measuring the temperature, a temperature detector 123 for detecting the outside temperature, a four-way valve 58, a solenoid valve 80, an electric expansion valve 65, or the electric expansion valve ( A position detector 124 or the like for detecting the position of 65 is connected.

125 is a compressor electric motor, and is connected to the motor drive board 126.

The motor drive board 126 is also connected to the control board 120.

127 is a 3-pin terminal board, which is connected to the control board 120 and to which the apparatus pipe cable 128 is connected.

129 is connected to the electric motor 53 by an electric machine board.

8 is an operation circuit diagram of this air conditioner.

The power substrate 130 includes an electric motor power source 131, a control circuit power source 132, a series power source 133, and a drive circuit 134.

In addition, the control board 135 includes a series circuit 136, a drive circuit 137, and a microcomputer 138.

The control board 135 also includes an electric motor 101, 102, 103, 104, a triac substrate 109, a display substrate 112, a temperature detector 22, 105, 23, and a switch board. 113 is connected.

The display substrate 112 includes an LED 146 for display, a radiation sensor 21, an optical sensor 141, and a receiving circuit 142 for receiving a signal from a remote control device.

The switch substrate 113 includes an LED 150 for self-diagnosis, an operation changeover switch 151, and a switch 152 for self-diagnosis.

The control board 120 includes a switching power supply 153, a microcomputer 154, and a series circuit 155.

The electric machine board 129 includes a control circuit 156, a drive circuit 157, and a switching power supply 158.

9 and 10 are external views showing a wireless remote control apparatus for operating the operation of this air conditioner.

The 200 is a wireless remote control device. The remote control device mainly includes an operation unit 201 in which a plurality of button switches are arranged, a display unit 202 for displaying an indoor temperature, a set temperature or a time, and a transmission unit 203. And a lid 204.

205 is a switch for starting or stopping operation, 206 is a switch (setter) to press when it is hot, 207 is a switch (setter) to press when it is cold, 208 is a switch for driving the horizontal wing 13, 209 is a vertical wing 14 is a switch for driving, 210 is a switch for starting or stopping a start timer, 211 is a switch for starting or stopping a timer for stopping operation, 212 is a switch pressed for setting a start time of operation, 213 Is a switch to be pressed when setting the stop time, 214 is a switch that is pressed at the user's discretion when the electric carpet is in use and is pressed again when not in use, and the switch 214 is disposed on the lid 204. It is.

215 is a switch pressed when driving the radiation sensor 21.

11 to 13 show a radiation sensor.

The radiation sensor 21 detects the temperature of the floor surface of the room, and the controller 7 controls the operation of the air conditioner based on the detection temperature.

The radiation sensor 21 is disposed below the front panel 8, and detects the temperature of the bottom surface of the front inclined range from just below the indoor device 1 of the air conditioner.

That is, the radiation sensor 21, as shown in Figs. 11 and 12, reflects the infrared rays 220 to reflect the infrared rays emitted from the bottom surface, and the focus of the reflecting means 220. The sensor 221 provided in the vicinity and the sensor case 222 which supports the reflecting means 220 is comprised.

The cross section of the reflecting means 220 is a parabolic shape surrounded by a parabola and a straight line L inclined with respect to a straight line M in contact with the parabolic vertex, and including a vertex.

Incidentally, the angle θ formed by the straight line L and the straight line M varies depending on the width of the room and the attachment position of the indoor device 1 of the air conditioner, but is set to 12 ° in this embodiment.

The reflecting means 220 is made of ABS resin and has a thickness of 1.5 mm, and the surface thereof is nickel chromium plated.

Further, the parabola to form the reflecting means 220, and use the parabola represented by Y = (8/144) x ^2.

In addition, the angle formed by the parabolic axis R and the tangent line d is set to 30 degrees.

As shown in FIG. 12, the sensor 221 includes a heat receiving plate 223 for receiving infrared rays collected by the reflecting means 220, and a dummyster 224 for detecting the heat of the heat receiving plate 223. This dummyster 224 is directly supported by the lead wire 226 arranged in the hollow of the cylinder 225, and has a simple structure.

The sensor 221 is arranged at the focal point of the reflecting means 220, and selects and sets the parabolic curved surface such that the position comes inward from the straight line L connecting the terminal portion of the opening.

By setting it as such a structure, the structure of the whole radiation sensor 21 is simplified.

The heat receiving plate 223 is shaped to form a part of the sphere, and is formed by protruding the peripheral portion and the central portion in the same direction, so that the infrared rays can be efficiently collected to detect the temperature change sensitively.

The heat-receiving plate 223 is subjected to a mirror surface treatment such that the interior side is a reflection surface, and the other surface is painted in black so as to receive infrared rays reflected by the reflection means 220, and thus the reflection means ( 220 only efficiently reflects the infrared rays reflected.

The sensor case 222 supports the filter 224 together with the reflecting means 220, and a shaft of the electric motor 104 is connected to the side portion thereof, so that the sensor case 222 can be driven left and right. .

Therefore, the left and right along the wall surface side of the indoor apparatus 1 can detect the temperature of a different range by the drive by the electric motor 104. As shown in FIG.

The insulating member 225 is interposed between the sensor case 222 and the reflecting means 220, 227 is a dummyster for temperature compensation, and R is a parabolic axis.

The air conditioner configured as described above operates as follows.

When the indoor device 1 of the air conditioner is attached to the indoor wall, the radiation sensor 21 is inclined downwardly.

When the operation switch 205 of the wireless remote control apparatus 200 is pressed and the air conditioner is operated, the air sucked from the suction grill 9 of the indoor apparatus 1 is heat-exchanged in the heat exchanger 5, and the blower It blows off from the blowing port 12 by (6).

When the operation changeover switch 151 is pressed and the automatic operation mode is selected and the heating operation is performed at a low temperature such as winter, the operation is performed as follows.

When the room temperature is lower than the set temperature transmitted from the wireless remote control apparatus 220, the horizontal wing 13 is controlled downward so that the warm air is blown in the bottom direction.

When the room temperature rises and the set temperature is the same as the room temperature, the left wing 14 is operated to the left, the right wing 14 is operated to the right, and the wing 13 is operated inclined downward. .

By the control of the blades 13 and 14, the warm air does not directly touch the user, but the warm air is supplied as if to surround the user from the left and right directions of the user.

In this air conditioner, when the automatic operation mode is selected, the radiation sensor 21 detects the floor temperature, and the operation of the air conditioner is controlled in accordance with the detected temperature.

In the radiation sensor 21, as shown in FIG. 12 and FIG. 13, the area | region of the short side T of the radiation sensor 21 collects infrared rays from the area | region of the wall surface side, and the area of the long side S is indoors. It collects infrared rays from the center area.

In this case, since the area V in the reflecting means 220 is wider than the area W, it is possible to detect the temperature of a wide range of areas from the bottom surface of the lower side of the wall to the bottom surface of the center of the room. .

In addition, the detection area of the radiation sensor 21 can be shifted left and right by driving the electric motor 104.

In this way, the infrared rays collected over a wide range even in the region deflected from the bottom surface of the wall to the bottom surface of the center of the room is reflected by the reflecting means 220, so that all of the infrared rays are in focus from the properties of the parabola. Collected at 221.

In the sensor 221, the rear surface side of the heat receiving plate 223 is black so as to efficiently absorb the infrared rays reflected from the reflecting means 220, and the infrared rays directly radiated to the front face are the reflecting surfaces. Because of the reflection.

The heat of the heat receiving plate 223 is transmitted to the controller 7 as a temperature signal.

The controller 7 controls the blower 66, the vanes 13, 14 and the like based on the detection temperature of the radiation sensor 21.

When the temperature detected by the radiation sensor 21 falls 2 degrees Celsius below room temperature, for example, the horizontal wing 13 is controlled downward so that the warm air is blown out in the bottom direction.

In addition, when the electric carpet is used and the switch 214 of the wireless remote control device 220 is pressed, the set temperature of the air conditioner is automatically 1 ° C. 5 minutes after the switch 214 is pressed. Lowered.

In addition, after 5 minutes, the set temperature is automatically lowered to 1 ° C.

When the bottom temperature detected by the radiation sensor 21, that is, the carpet temperature is higher than the predetermined value, the set temperature is automatically lowered by 1 ° C.

In this way, when the switch 214 is pressed and the floor temperature, that is, the carpet temperature is high, the set temperature is automatically lowered, so that the head is not too warm and the foot is not too cold. Your feet can expect a warm effect.

Furthermore, since the set temperature is lowered when the floor temperature, that is, the carpet temperature is high, the electric value required for the air conditioner can be saved without impairing the comfort.

In the case of the cooling operation, when the temperature detected by the radiation sensor 21 is lower than the predetermined temperature, the set temperature is raised to approach the outside temperature.

As described above, in the air conditioner according to claim 1 of the present invention, since the cross-sectional shape of the reflecting means is a shape cut obliquely from the parabolic line, the area for concentrating infrared rays on one side of the radiation sensor can be made wider than the other side. At the same time, the left and right sides along the wall surface of the indoor device can detect a wide range of temperature by driving the sensor case to the left and right by the drive of the motor, so that even when there is a bias in the detection area, The temperature of the bottom surface can be detected over a wide range.

In the air conditioner according to claim 2, for example, when the temperature of the floor surface is higher than the predetermined temperature during the heating operation, the set value of the heating operation is corrected low so that energy required for operation can be saved without compromising comfort.

Claims (2)

Near the focal point of the reflecting means consisting of a reflector means for reflecting infrared rays to collect infrared radiation emitted from the bottom surface, a heat receiving plate for receiving infrared rays collected by the reflecting means, and a dummyster for detecting heat of the heat receiving plate. A radiation sensor composed of a single sensor installed and a sensor case supporting the filter together with the reflecting means is attached downward to the lower side of the front panel of the indoor apparatus, and the reflecting means for condensing the infrared rays to a specific point is used. In the air conditioner to use the temperature of the specific point for the control, the side of the sensor case is connected to the axis of the motor to drive the sensor case to the left and right, the reflecting means has a cross-sectional shape of the parabolic Is surrounded by a straight line that faces the vertex and a straight line that intersects at an acute angle to the straight line, The air conditioner, characterized in that the parabolic shape comprising. The apparatus of claim 1, further comprising a controller for controlling the operation of the heat exchanger, the blower, and the outdoor device, wherein the radiation sensor detects the temperature of the lower surface of the chamber to be different from the outside temperature by exceeding a predetermined temperature. And the controller corrects the set value in a direction approaching the outside temperature based on the detected temperature.